Bmil hermans



(No Model.) I Y E. H. NAOKE.

PAPER PULP 0R RAG ENGINE. I No. 357,686. Patented Feb. 15, 1887.

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Nv PETERS. PIloto-Lflhugxapher. Wnhinglnn. DV (2 NITED STATES PATENT Erica.

PAPER==PULP OR RAG ENGINE.

SPECIFICATION forming part of Letters Patent No. 357,686, dated February 15, 1887.

Application filed November 26, 1886. Serial No. 219,899. (No model.)

To all whom, it may concern.-

Be it known that I, EMIL HERMANN NACKE, a citizen of the Kingdom of Saxony, residing in Dresden, in the said Kingdom of Saxony, in the Empire of Germany, have invented certain new and useful Improvements in Paper- Pulp or Rag Engines, of which the following is a specification.

By grinding, cutting, mixing, bleaching, and washing all kinds of paper in mixing and bleaching engines of the usual form there exists the inconvenience that the treated stock is not properly mixed by the roll, and dead places are often formed at the edges and the bottom of the vat, whereby a not uniformly worked pulp is produced.

By means of the hereinafter-described impro vements in such engines, represented in the accompanying drawings, such inconvenience will be avoided.

Figure 1 is a longitudinal section of my im: proved engine. Fig. 2 is a plan of the same. Fig. 3 is a modification of Fig. 1, with the flying turbine wheel f arranged below the partition-board a and without guide-board c c. Fig. 4 is a second modification of Fig. l, in which, in lieu of aturbine wheel, f, agrinding disk or wheel is provided, on the under side of which are knives radiating from the center. Fig. 5 is a plan of the grindingsurface, shown in Fig. 4 with knives.

The vat is provided, as usual, with the central partition, m. Between one side of this partition and the wall a of the vat A (where in the common beating-engine the roller turns) a partition, a b, is placed transversely from m to n.

The partition a I) is arranged partly'horizontal, or nearly so, and partly in a sloped way, and a circular opening, t, is made in the horizontal part-a, above which, Fig. 1, or below which, Fig. 3, moves the turbine wheel f, attached to the vertical axle f, so that the pulp passing through the opening z'enters the wheel.

If the vat is filled with paper-stock and the wheel f begins to turn, it draws the pulp through i from one side of the partition and delivers the same at the other side. It follows by this arrangement that there will be a continuous movement of the pulp in the direction of the large arrows. (See Fig. 2.) The wheel f, which by this arrangement does the work For avoiding deadplaces in the stuif streaming against the turbine wheel. the part b b of the partition has an inclined position, thus turning downward the pulp fiowing against it. To avoid dead places and Whirlpools above the flying wheel, a guide-board, c 0, Figs. 1 and 4, is arranged, by means of which the pulp discharged by the wheel is divided into two currents, the one flowing at the bottom and the other toward the surface of the mass.

In lieu of giving the partition-plate b an inclined position, the same effect as to avoiding dead places in the stock flowing toward the wheel may be attained by making this part of the partition curved, as shown by the dotted curved line 1; 10, Fig. 1. By arranging this partition curved like 1; 2, (same figure,) the stock issuing from the wheel against the partition will be guided to flow off in the proper direction, as indicated by the arrows 8. To prevent dead corners in the lower part of the vat directly under the wheel, the sides of this part are made inclined or curved toward the opening t t, as the dotted lines 1) beneath the plate a a in Fig. 2 indicate.

The vertical axle f, upon which the flywheel f is fitted, may be turned by means of a pulley placed above the vat, in which case the axle f is to be prolonged upward; or if the pulley is placed below the vat, as represented in the drawings, the entrance of the axle in the vat is tightened by a stuffing-box, d.

The axle f may be placed in an inclined position, as represented by the dotted line 00 y, Fig. 1.

. In this case the partition, as well as the wheel f, follows aposition normal to the direction of the axle w l so that the current of the pulp issuing from the wheel remains parallel, or nearly so, to the sloped bottom of the vat, thus securing a strong bottom current.

If a grinding or cutting disk is arranged as shown in Fig. 4, the partition a must be provided with a circular bed-plate, g,with knives, (see Figs. 4 and 5,) and convenient attachment may be provided to the spur of the axle f for raising and lowering the same, as well as the disk, against its bedplate.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination with a flying or turbine wheel, f, placed in the vat, the transverse partition a I), placed between the mid-partition m and the wall a of the vat, said partition a b beingpartl y horizontal, or nearlyso, and partly I inclined or curved, as described, and provided 

